[Elecraft] dBi dBd correction
Ron D'Eau Claire
ron at cobi.biz
Wed May 6 17:31:33 EDT 2009
Yeah, I misread the rule. I thought the rule was saying a dipole was 0 dbi,
not 0 dBd! Didn't make sense to me.
Gus, KB0YH also caught my mistake.
Tnx for un-kinking my brain Guys!
73,
Ron
-----Original Message-----
Ron,
The FCC regulations for 60 meter power is referenced to the maximum lobe
of a dipole. Sooo --
That should be "0 dBd" (gain/loss relative to a dipole) rather than "0
dBi" (gain relative to an isotropic radiator).
If my recollection is correct, 0 dBd is 2.15 dB greater than 0 dBi in
the dipole's favored directions (perpendicular to the radiator).
For those not familiar with an isotropic radiator, it is a point
construct in free-space that radiates equally in all directions.
73,
Don W3FPR
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